kieley



(No Model.)

T. J. KIELEY,

AUTOMATIC RETURN STEAM HEATING SYSTEM.

Patented July 2, 1889'.

A r m W W 02 n m 7 I Q, R: a

i 'rn'r "tries.

TIMOTHY J. KlEL-EY, OF NEW YORK, N. 3

AUTO-MATlC RETURN STEAM-sunrise sa er-sin.

j srnoirrca'rrou forming part of Letters Patentlil'o. 406,220, dated Jul 2, 1889.

Application filed April 18, 188'?:

To all whom it may concern:

Be it known that I, TIMOTHY J. KIELEY, of the city, county, and State of New York, have invented a new and useful Improvement in Automatic Return Steam-Heating Systems, of which the following is a full, true, and complete description, reference being had to the V accompanying drawing.

My invention relates to a steam-heating system 111 which I automatically return to the boiler the water of condensationani-if necessar automatically supply an additional amount of water to keep the Water up to a predetermined level in the boiler. By means of a pump-governor I determine the operation of the pump, so as to return constantly a sufficient amount of water to maintain the proper water-level.

. My. invention will be readily understood from the accompanying drawing.

A represents a boiler or battery of boilers suflicient to supply the required steam. The main steam-supply passes from the boilers by the live-steam pipe B, which pipe contains the reducing-valve V. From this main steampipe B the steam passes to the radiators D (3, as may be required, and thence to the main return W. An equalizing-pipe E inside of the branch return F serves as a relief-pipe from the main steam-pipe; but this may be dispensed with. The pipe G, forming a part of the main return, connects with the pipe E above the pipe W, as shown, and delivers into the tank ll. This tank H contains a floatvalve J, which regulates the water-supply from the street-main, as will be described. The return passes from the tank H by the pipe K to the pump L and thence by the return T to the boilers. The pump L is operated by steam passing through the pipeM from the boilers, as shown. The exhaust from the pump may pass into the low-pressure side of the heating system by the pipe P, which communicates with the pipe B by the pipe S beyond the reducing-valve and by the pipe X through the back-pressure valve R with the atmosphere. The steam passing through the pipe M is regulated by the pu nipgovernor N, which may be a boiler-feed governor of any well-known structure, its operation being such that when this chamber is Serial No. 235,238. (No model.)

level of the boiler, itis apparent that when- 7 ever the water-levehot' the boiler is high enough to close the pipe Y the pump-governor will be tilled with water, whereas when the pipe Y communicates with the stemnspnce of the boiler the pump-governor U will be filled with steam, the water passing back into the boiler by its own gravity. Suitable aircocks should, be connected with the pumpgovernor N to relieve it whennecessary.

The operation of my apparatus can now be readily understood. Steam passes through the main steam-pipe l3 and then by the operation of the steam-pump L it is forced back to the boiler. '-'lhe steam-pump L will only A operate, as described, when the boilers require additional. water that is, when the waterlevel has fallen below the level of the dotted line a: .90. If the main return to the tank H is insutlicient to supply the boilers withthe re quired amount 0t water, then the water-level in that tank ll will fall so low that the floatvalve J will permit an additional supply of water to enter from the main. If it is desired, this tank may be dispensedwith by opening the pipe J and closing the passage through the tank, when the water will return directly to the pump. The exhaust from this pump is advantageously used through the pipes P and S for heating, when such heating is required. On the other hand, by closing the valve in the pipe S the exhaustfrom the pump will escape by the back-pressure valve R and pipe X to the roof. In case the pressure on the street-main is insuflicient to force the water into the tank 11 against the reduced .reaeoo of the e! By the "term boiler-feed governor when need in. this speeifim-iiion I mean :1 governor of any well-known eoijls'l'rucbion which will eontrel the waive to which it is connected by "es within predetermined limits in the Water-level in the boiler.

l are Emu-re that heating systems have been provided with pumps for ro-fiurning the water of eomlensznziolfto the boiler, the operation oil? which pumps was controlled by a governor enemi ed by the emonri of eonilezmeil steam gathered in a reeeptimle provided therefor in the retnrrrpipe; hence I disclaim such a eonshrneeion as forming my invention.

What I claim as my 1 .I1V(2l1tlOl1,'all(l desire to secure by Letters Patent, is

1. The eombinatiomin a. flown-heating sysiem, of amain steam-supply pipe, 9. main return-pipe, and a pump in said main return for forcing the water back to the boiler, a steam-pipe carrying steam to said pump, a. boiler'feed governor operating the valve of said steam-pipe, 2r connect-ion from the bottom of said boiienfeed governor below the watenierel of .ihe boiler, and a connection from the top of said boiler-feed governor to hire boiler at the level at which it is desired to maintain the "Water in the same, substan- 2. In a steam-healing system, the combination of a. boiler, n main steam-supply pipe, and a main reivurn-pi 'ie connectingthoboiler and radiators, a pump in the main roturnpipe for iforein the wnier back; to the boiler, a stezmi-supply pipe connecting with said pump, a eontrolling-valve in the stemn-pipo for the pump, and av boiler-feed govornoreon- .nected with said valve to operate the same, snbsimitially as described.-

3. The combination of the boiler A, main steam'snpply pipe 13, main return-pipe \V, pump L in said main returnqxipe for forcing water back to the boiler, the l)'()ll(il'-f60(l governor N, provided with a fioat-eonneetion 0 from said governor below the water-level oi the boiler, eonnecnionY from said governor to the boiler at its water-level, and the auto matic supply -'mnk I'l, communicating with the pump, substantially as described.

In testimony whereof I have signed my name to this specification in thepreseneool two subscribing witnesses.

TIMOTHY J. KIELEY.

' itnessesz ANTHONY GREF,

Melly described.

WM. A. POLLOCK. 

